Humidifier



I Figure 1 is a: s1

Patented Aug. 2, 1927'.

TUNITED STATES flmmns' w. GALLQWAY, or wA'rnRLoo, IOWLASSIGNQR' or HAFFNER, OFVDESHMOINES, iowa;

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Application filed November 23,1926. Serial No. 150,216.-

, An object ofthis invention is to-provide improved automatic means for supplying Water vapor to the warm air circulated for heating purposes from avhot air heater.

-. A further object of the invention is to 'provide'improved automatic means whereby the water vapor content of the warm ,air circulatedfrom ahhot air heater maybe proportioned to the temperature ofthe heater. 10 A further object of the invention. is to provide improved means whereby thewater vapor content of the warm air circulated from a hot air heater may be automatically controlled by the'temperature of the heater.

A'further object of the invention is to provide adjustable, automatic means whereby water flow between a source of supply and an evaporating pan may be regulated and controlled by temperaturechangesl A further object of the invention is to provide an improved'construction for ahumidifier adaptedfor-simple and ready installation in and on hot air heatersalreadyin "My invention consists in the construction,

arrangement and combination. of elements hereinafter set forth, pointed out-in-my claims and illustrated by the accompanying drawing, in which i de elevation of? my im- *proved humidifier as-mounteddmand .on a

hot air heater for practical use, auportionf of a 'conve'ntional hot air'iheater being shown "with parts broken away in order to better -15 illustrate the device; Figure 2 is; a vertical *section of the device I shown in .Figure '1,

'- wiiththe aperture of the bo'ss 2 3. Thusis second yoked frame formed withingand enan enlarged scale, a section of the therrmostatic element bein'gromitted. Figure 3 -is a side'elevationof the operating-head et =-mydevice and its connections, on the same scale as Figure 2. Figure=4 isIa top plan *view of the'valve'member and'drip cup employed in mydeviee Figures 5, 6 and 7 are 1 detail views of a modificationi f s I 4 v1. IILthGGOIIStI'IlCtlOIl of my device as shown,

the numeral 10 designates the warm fair" chamber casing of 't COIlVBIilJlOIlELl-llQij air heater, said casingibeing provlded-wlthfia top plate 11 and circulating ducts-12," in

1a'commonand well known manner. Aahollow tube 0rpipe'13, of relativelylarge'diam- .eter and formed of "aometal having a-rela- =tively high coefii'cient of expansion, exter-;

-nally threaded' at either end, is mounted :through the top plate 11 in sliding relation to, a secured said top plate and is positioned vertically there throughby means of a 'setlscrew 15 the lower.- end of the pipe 13 extending downwardly withinythecasing 10 to a point above'and spaced; from the crown of the fire+box-16. Alyoked frame is formed by molding or-castring and comprises, an apertured,c-internally threaded boss, 17,1 arms ;18 and 19 diverging upwardly from said boss for 'a portion of their length, then. extending parallel fora distance and finally converging to a common meeting in an enlarged portionor. boss '20. =The frame thus formed is secured to the 'upper end of the pipe {13 by 'meanslof the externalithreads on said pipe: engaging with -thei-nternal threads within the boss' l'? and is positionedandsupported on said pipe with'its longer axis vertical andrising above the upperend ofsaid pipe A tube or pipe 21, of relatively small diameter and formed =-of a metal having arelatively lowcoefiicient :of expansion,- is mounted within the pipe 13,

loosely,-is secured 'to said 'latter-ipipeat its lower endzby; means of rivets or-pinsj22 and "projects above the pipe '13 at-its upper end' into-"the space -within the yoke between the Harms 18;and=i19. Theuupwardly projecting endrof the pipe 21 is externally-threadedand -'zisg'r:eceived in the internally threaded apertureofa boss'23 froni whence rise upwardly-- extending, diametrically-opposed, diverging arms 24rand 25, -Wl110l1 arms'converge'after aspace to form-a5 common boss 26,;axial1y of and spaced-axially: from the-boss 23,

saidrboss 26; being apertured in alinem'ent spaced'from' the yoked frame supported 'by .therpipe 131' ThevbossQO of-the'exterior 7 frame is formed with aninternally threaded bore at right angles 'to the, plane ofisaid boreand having its larger end opening downwardly toward' and inalinementzwith thie' axis of: the pipeill'. *A' water supply'con nection, as indicated at 27, is threaded into the threaded bore of the bossv QOfand leads to a-source 'of water supply, not shown. A plunger type :valve is fOIIllGClrWltll' an externally threaded stein 28, a" tapered end portion 29 and an annular flange 30 between s lidstenran'd tapered end pgmtion; Saidplunger valve is mounted vertically through the aperture in the boss 26 with its tapered end portion 29 seated in the tapered bore of the boss --.a-nd -=is retained in such position 6 By nieztns of an expansivet coi l s 1 in 3-1 surrounding the stem 28 and con ne 'hetween the lower face of the annular flange 30 and the upper face of the boss 26. An adjusting nut 32 is threaded on thiedower end to rtheuend of said stem nndextendling "heth'ehottom df :the cup 34 tolwhi ch said ho're: "35 is 'e'onnected by means ar p'lunetlity j of :inohinedrifidSSagGS -36. Thus is provision -made, when the v alve is unseetethdor 15515 aflow ofl Walter frmn th'e supydly connection 27,-thnoughtheuintersecting bores in the boss 20, the 34', passages #36 and bone 35, to

send through the pipe 21. A relatively ishalul'ou "evaporating zpwn 37 is formed with flu 715m plurality [of upwwrdly-iextending, converghaving un "interneilly-rthreaded i aperture by hneans' of 'uvhichesaid v pan 1 is secured to the l kby supported bmeethuthe open lower endubf hthe pipe 21 immediately eboveathewcnown of the firebox- 16v An "aperture is formed in one of the side Walls of the fipan37 and 1 a npirpekto is received in said aperture fund "'40 leads through the side "Wall of the eusing 10 toguardagaiinst overflowof'seid penw In the operution'rofwmy device as mounted as shown in"=Figune :lythe intersecti lrgbores dtfwthe hose-20 me connected towa tpressu-I'e M5r watensupply land therulve 29 1's seztted in water? to FfiO W through :saidsvalve, "the 'elip flegepessages 36, bore 35 a ndi'p'ipe 21"int0the V X 3 evaporating ipan 57 where the heat frorn the rfire bqx MIG-generates water vapor "which :is

0 "ling 1 0. Itds obvious that asthe temperature *of the heater increases the valve 29 will -be durther opened and more water will 'be con-' 1 =dueted :t'omthe pair 37, and eonversely, gas the 'temperil ture rd'eereuses ithe valve:open'ingwvill at low temperatures maybe had byropening the velve to the desired degree threugh manual-ad-"ustment of the nut 32.

In t e-construction of the modified iorm of eve-taerating pan as shown in Figures 5, 6 "and 2irelativelydeep cup 37 is formedwith diametrically-oppoSed, inwardly-extending ears adjacent its upper, openmar- 'zg-irn, -sazid ears having internally-threaded holes adapted to receive screws lhy means of which] a centlurlly apentured "iban '38" P-posi tioned end secured diunietrieall ly Iof nth'e opentop of {said cup. The centna lepe'rltune in the lnlir 38"fis'of a slz'e todoosely ueeei ue I tl 1e =lower fend ofthe pipe 11 3, which: is pre fere8 wably unthreaded when the modified emu :of evaporating pan is usedyand spaced tapered pins 225 connect the pipes :13 wand Qlfinwthe stead of the rivets '22, :said pins 22 dieing rliemovuhle'und replaceableiahd projecting at @185 either end beyond the surface of thespie 13,1thehar 38 being adapted torsurround t e "pipe l3 and rest on theprojectionsofrthe lower of lithe pins 22 r and thereby support ithe cu p'37? uvitlrthewendofrthewprpe13eX- tendingtvithin said cup. (The 'overflowwpipe V 10 received in an aperture in the side Wall of the cup 37W1hove the? :plane of rthe nend of the. pipe 'lil to theend thutflthe rleveluef Water Wi thinaid cup "will norn'lallw stand above the-end of said pipewzmd thereby-dorm e ituap against rthe'escape of -=hca-ted end 'unoisturetthrough the pipes :13mmd 52L v Various structural modifications of Inyde- Wice as shown rand described he made "1900 Without departing 'firom the spirit-101E; l l inmention, 'l1e11"ce -I= ewishi to be understood ms rhei'ng =limited only iby thee-scope of the eppendedclaims. -l claim as my inwention l l 1 A humidifier in C01I1'bihdtlOI11'W1t' eavhot unny-heater, conlprising wa. thermostatic *elevnlent formed of ceneentnic tubes of; unequal rlength interconnectedart one zelfdr -and imeunt: edvertically through themp ofi Saidheater,

p :a yoke 'carri'ed ontheupper end (if the outer tube; n vwlve seat'zand 'waterwsupply conmzc itions (carried by I said I woke, mesecond *yoke' ce rri'ed hy the upper end "ofutheainn'er ituhe Within said =first namedr yoke, v :u' sspringpressed plunger *valveican'riedtby said second yoke rand adapted to register with said :seat

end 1am evaporating pan supported by and beneath said thermostatic element 2. A Ihu'midifier in xcornbinat-ionewithzw hot M wir zheaterl, yeomprising ta Itheirmostatic eeleuneut T formed of concentric tubes of irmetals other eof-lsztidyokes forrcontmllihgltherifltiw mos of water through said supply means and an eva orating pan supported by and beneath sai thermostatic element.

3. A humidifier in combination with a hot air heater, comprising a thermostatic element formed of interconnected concentric tubes mounted vertically through the top of said heater, independent yokes carried by the upper end of each of said tubes, water supply means connected with one of said yokes, a spring-pressed plunger valve carried by the other of said yokes and adapted to control the flow of water through saidsupply means, an evaporating pan supported by and beneath said thermostatic element within said heater and water conducting means through said valve plunger and thermostatic element connecting said valve and evaporating pan.

4. In a device of the character described, a thermostatic element formed of concentric tubes of unequal length, yokes carried by the unequal ends of said tubes and water supply means connected with the outer of said 2 yokes, water flow control means carried by the inner of said yokes and comprising a stem portion formed wlth an axial bore, an

annular flange on one end of said stem and formed with a cup on its upper 'face, a tapered portion rising axially'from said cup and adapted to seat in a tapered bore, passages between the bottom of said cup and the bore within said stem and a spring con-- fined between the lower face of said flange and said yoke, together with adjusting and limiting means carried by said stem in nor.- mal contact with said yoke.

v 5. In a. device of the character; described, a thermostatic element,'water supply and water flow control means carried by said element and water conducting means through saidwater flow control means and said element, an evaporating pan supported'by and beneath said element comprisin a relatively shallow pan and a plurality 0 arms rising.

from the side margins of said pan and con-v verging to form a common apertured member whereby said pan s secured to Said-618 ment.

6. In a device of the character described,

a thermostatic element comprising concentric tween said bar and cup;

JAMES W. GALLOWAY. 

